Wash
“Washing” in the Bible represents purification - unsurprisingly! Washing dirt from the skin symbolizes using true ideas from the Lord to remove evil desires and false ideas from our minds. This is the reason that washing was such an integral part of ritual; cleaning the body to perform physical acts of worship - something with no actual spiritual value - is symbolic of repenting our evils and falsities as part of worshiping the Lord.
Ezekiel 45:18-20
18
Thus says the Lord Yahweh: In the first [month], in the first [day] of the month, you shall take a young bull without blemish; and you shall cleanse the sanctuary.
19
The priest shall take of the blood of the sin offering, and put it on the door posts of the house, and on the four corners of the ledge of the altar, and on the posts of the gate of the inner court.
20
So you shall do on the seventh [day] of the month for everyone who errs, and for him who is simple: so you shall make atonement for the house.
